Vinyl Glossary: The Collector's Lexicon

A 30 cm record played at 33 or 45 RPM. As an LP it is the standard album format. As a maxi single (at 45 RPM), it originated in 1970s disco music for the warmer sound and deeper bass provided by wider grooves.

Record pressed with 180 g of material instead of the standard ~120-140 g. Stiffer and more stable on the platter; it does not guarantee better sound on its own, but reduces resonance and resists warping.

Single played at 45 revolutions per minute, usually a 7-inch with one song per side. The dominant format of commercial pop from the 1950s to the 1980s. American jukebox 45s with the large centre hole are among the most sought-after by collectors.

The standard physical format of the single: approximately 17.5 cm in diameter. Almost always played at 45 RPM, sometimes at 33 RPM (EP). The 7-inch is the format of the single song, the B-side, the jukebox rarity.

Reference disc cut directly from the master, used for test listening before production. It deteriorates after only a few plays. Original acetates from famous sessions are museum pieces.

Copy distributed before the official release to journalists, radio stations and distributors for promotional purposes. Often identical to the commercial version, sometimes with provisional labels or sleeves.

Reissue produced to high technical standards: heavy vinyl (180-200g), half-speed mastering, limited-run pressing. Labels such as Mobile Fidelity, Analogue Productions and Music on Vinyl are the sector benchmarks.

The second side of a single, historically less promoted than the A-side. Often contains rarities, alternative versions or tracks of lesser commercial relevance. In pop history the B-side has hidden some of the most important tracks ever recorded.

The standard album format: 12 inches, 33 revolutions per minute, approximately 20-25 minutes per side. Introduced by Columbia in 1948, it defined the modern idea of the album as a unified work.

The aluminium disc coated with cellulose nitrate onto which the mastering engineer cuts the groove. The lacquer yields the mother, from which stampers for pressing are produced. Lacquers cannot be played back directly: they last decades but must be handled with care.

Edition produced in a declared, numbered run. May include coloured vinyl, special sleeves, inserts or bonuses. The term is often used loosely by the industry: a limited edition of 10,000 copies is not as rare as it implies.

Recording published without authorisation from the artist or label. Often live concerts, studio rehearsals or rarities never officially released. Illegal but historically significant as a parallel archive of popular music.

The component mounted on the tonearm that converts the mechanical variations of the groove into an electrical signal. Contains the transducer (usually moving magnet MM or moving coil MC) and the stylus. It is one of the components that most affects the final sound.

Copy produced in very few examples (often 5-10) to verify mastering quality before mass production. Usually has white labels with handwritten notes. Original test pressings are among the rarest and most expensive items in collecting.

The alphanumeric code assigned by the label to each release. Appears on the physical label, the sleeve and the matrix. A fundamental tool for identifying editions, countries of manufacture and variants. The same album in different editions often carries different numbers.

The highest condition practically achievable for a used record: no visible scratches, sleeve virtually intact, sound free of surface noise. Mint (M) describes an unopened record; NM is the reference grade for the collector market.

Edition in which each copy carries a sequential number printed or written by hand. It guarantees the declared run and adds uniqueness to the copy. Low numbers (001, 002…) are often the most sought after.

Vinyl pressed in colours other than the standard black. Often used for limited editions, RSD (Record Store Day) or reissues. Coloured vinyl is not inherently worse than black, but the added colouring material can sometimes increase surface noise.

The practice of searching for records by flipping through crates in second-hand shops, flea markets and warehouses. It is not just buying: it is research, discovery, musical education. The term comes from hip-hop culture, where producers dig for samples.

Corner of the sleeve cut to indicate the record has been deleted from the catalogue or sold as a promo. Reduces collectible value but does not affect the record itself. Abbreviated CC.

Mastering technique that cuts directly onto a copper plate rather than the traditional lacquer. Developed by Teldec in the 1980s. Produces less surface noise but can sound harder and more analytical compared to lacquer mastering.

The smooth area between the last groove and the centre label. It contains matrix codes, pressing plant identifiers and often hand-etched signatures or messages from mastering engineers. It is the primary tool for identifying pressings and plants.

Record deleted from the catalogue and no longer pressed by the label. A deleted title is not necessarily rare, but its absence from current production means it can only be found on the secondary market.

An intermediate format between the single and the album: usually 4-6 tracks, often on a 12-inch at 45 RPM or a 7-inch at 33 RPM. Widely used in indie and electronic music as a debut format or for material between albums.

In the strict sense, the paper circle at the centre of the record carrying the title, artist, catalogue number and side. More broadly, the record company. For collectors both meanings matter: the colour and design of the physical label help date a pressing.

Very thin and flexible disc, often included with magazines or inserted in packaging. Limited audio quality but great collectible appeal. Widely used in the USSR as an underground medium for banned Western music (roentgenizdat).

Book-style sleeve that opens out into two or more panels. Used for double LPs or to make room for photos, lyrics and credits. An intact original gatefold affects collector value.

Standard system for grading the condition of a record: Mint (M), Near Mint (NM or M-), Very Good Plus (VG+), Very Good (VG), Good Plus (G+), Good (G), Fair (F), Poor (P). Grading is applied separately to the record and the sleeve.

The spiral groove cut into the vinyl that carries the audio information. The stylus tip traces the groove and its lateral and vertical variations are converted into an electrical signal by the cartridge transducer.

The transparent plastic film wrapping the sleeve at point of sale. A record still sealed in its original shrink wrap represents the highest degree of preservation. The shrink may carry hype stickers and period price markings.

The metal disc used to press the vinyl. It is derived from the mother, which in turn is made from the lacquer. Each stamper has a limited life (several thousand copies) and deteriorates progressively: the first copies pressed from a stamper are generally the best.

The tip that tracks the groove of the record. Usually made of diamond, it comes in various shapes: spherical (less precise but more robust) or elliptical (more faithful). The shape and wear of the stylus directly affect sound quality and the condition of the record.

Mastering technique in which the tape is played at half speed while the cutting lathe also runs at half speed. The result is greater high-frequency resolution and deeper grooves. Used by Abbey Road, Mobile Fidelity and others for audiophile reissues.

The record every collector has been searching for years without finding: rare, expensive, often mythologised. It may be a first pressing in excellent condition, an acetate, a promo never widely distributed. Every collector has their own.

Sticker applied to the sleeve or shrink wrap with promotional information: tracks, guest artists, awards. On original pressings from the era it can be a useful dating indicator. Removing it damages collectible value.

The inner bag that holds the record inside the sleeve. May be plain paper (white or black), printed paper with lyrics and photos, or anti-static polyethylene. The original inner, especially if printed, increases collectible value.

Copy of a 45 RPM single intended for jukeboxes, often with an enlarged centre hole (spider hole) to fit American mechanisms. Original jukebox copies from the 1950s-60s are among the most sought-after 45s, especially in soul and rock and roll.

Codes etched in the smooth run-out between the last groove and the label. They identify the plant, edition and sometimes the mastering engineer: the main tool for dating and authenticating a pressing.

Single on 12 inches at 45 RPM, born in 1970s disco music. The wider grooves deliver deeper bass and greater volume than the 7-inch. A fundamental format for dance music, house and hip-hop in the 1980s and 1990s.

Pressing error: the vinyl contains a different recording from that indicated on the label. It may be the wrong side, a different album or an unintentional mix variant. Misspresses are industrial defects but are often sought after by collectors.

Vertical paper strip wrapping the edge of the sleeve, typical of Japanese editions. It carries title, price and notes in Japanese. Its presence in original form significantly increases a record's value.

The first pressing of a record, contemporary with its release, made from the original stampers. Often preferred by collectors for fidelity and value, though not always sonically superior to a well-remastered reissue.

Record with an image printed and visible through the transparent vinyl. Audio quality is generally lower than black vinyl due to the added material. Produced primarily as a collectible, often in limited editions.

Copy distributed free of charge to radio stations, journalists and industry insiders for promotion. Often marked with a stamp, hole punch or 'Not for sale' text. Original-era promos are sought after especially in soul, funk and jazz.

Hole punched through the sleeve to indicate the record is a promotional copy or has been deleted. Like the cut corner, it reduces collectible value but does not indicate damage to the record. Abbreviated PH.

Annual event (third Saturday of April, with a second date in autumn) on which labels release exclusive titles sold only in independent shops. Founded in the USA in 2008, it has contributed to the vinyl revival but also draws criticism for secondary market speculation.

New pressing of a previously released record. May be identical to the original or remastered. It is not necessarily inferior: some audiophile reissues surpass the original pressing in sonic quality. It should always be specified whether a record is a reissue or an original pressing.

New pressing of the same record, often from the same matrix or a copy of it. Unlike a reissue, which may involve new mastering, a repress is technically identical to the previous pressing.

The smooth area between the end of the music and the label, where the groove loops back on itself. It hosts the matrix and pressing codes; on many editions it also carries hand-etched messages or engineers' signatures.

Condition grade just below Near Mint: the record shows minimal signs of wear, a few light surface marks that may produce faint crackle but do not interfere with the music. It is the most common condition for quality used records.

The list of records a collector is actively seeking. On Discogs it is an integrated feature that sends notifications when a wanted record goes on sale. A serious collector's want list tells their story and their obsessions.

Record with a plain white label, without commercial graphics. May be a promo, a test pressing or an unofficial edition. In 1990s dance music and house the white label was the standard format for distribution to DJs ahead of the official release.